Measuring gauge



April 4, 1933.

W. AMESv MEASURING GAUGE Filed Aug. 16. 1928 Invnoaa.' Warren Jima-@,- 7M /LML' g Y o mkilys Patented Apr. 4, 1933 UNI-'TED ;sTATEs WARREN AMES, or WALTHAM, MAssAcnUsEr'rs: i

. arrastrar-Ne GAUGE 3 imputation med Augsvt 1e, 152s.; sum1 iro. V299,960. Y

The invention,` which relates particularly but not exclusively to measuring gauges, and

which Ahas ,among its `objectsfan improved .n mounting. for the bezel and improved gu1d` Fig. 1 is a plan view of a measuring gauge constructed according to the invention;'" `A Fig. 2 isa bottom view on an enlarged scale with the back plate of the instrument` removed; e

Fig. 3 is a section on the' line 3-'3 of Fig. 1 with the bezel and cooperating parts of the ab" gauge disassembled; e Fig. 4 is a section on the line 4 4l of Fig. l; and r Figs. 5,6 and 7 show details on an enlarged scale of the gauge according to Figs. 1 to 4. Referring to the drawing, ,the gauge is il-V lustrated as having Va casing which comprisesl a ring like member 1, closed at opposite sides respectively by removable frontv and back 5 plates 3 Vand 4, the l front plate 3 having mounted thereon mechanism including the gears 5 and 7 for actuating the indicating hand 9. As shown, the gearv 5 meshes with rack teeth 11 formed on a reciprocatory contact rod 13 extending substantially diametri- 3,5 cally of the casing.' 4

As shown, Athe casing 1 at opposite sides thereof is provided 4with perforations 15` (Figs. 3 and 7 the outer portions of which Al are counterbored to form shoulders 17 at right angles to the axes of the perforations. In each Vperforation is inserted a shank 19 of a nipple 21, the nipples being formed with shoulders 23 which abut with the shoulders 17 so as to Ai insure that the screw threaded portions 25 of 4D the nipples will be accurately centered with the .axes ofthe perforations. The rod 13 loosely lits the bore 27 of the upper nipple as shown in Fig. 3, while removablyscrew threaded on the nipple is aguidebearng '50 sleeve 29 for the rod. rlhe lower end of the v59, thus providing a durable,` smoothly actrod' asaviewed in Fig. e Sii'ainglyefs helnwein nipple 21,"which latter therefore serves as a t guide bearing sleeve for the lower endofthe rod. `As shown, the lower* nipple` or "guidev bearngfsleve 2l has screwed thereon a dust 5'51 cap 31'. l

Heretofore the guide bearing sleeve v29 has been formed integrallywith theV casing,

or; as ,aV separate piece; xedl'y secured to the t casing. Y In practice dust and dirt worky into the interior of theV sleeve 2 9, andy by making A the sleeve removable, the cooperating parts Vof therod and sleeve may be readily cleaned,` and Worn sleeves 29 replaced'.V Y Y As shown, the frontplate 3 about its pe-65 riphery is formed'to provide a shoulder 334 which engages with the shoulder 35 formed on a rotatable ring 37 when the parts are as'- sembled, the casing` being recessed as shown at 39 (Figs. 3 and 4)- for receiving the front plate and centering it with the casing, while the front plate is removably secured tothe l ref' casingby screws 41. t s i Thefside ofthe ring 37 opposite the shoulder 35 is providedwith a secondshoulder,43,V while the bezel which carries the crystal 47 isrecessed to provide a shoulder 49 (Figs. 3 and 4) forreceiving the ring 37.-` After the parts are assembled as shownin Fig. 4, ai resilient split' ring 51 igs. 4 and` `6')` is snapped into a groove 53 formed in the 1re`l cessed portion of the bezel which receives the ring y37 and thereby secures the latter to the bezel.` The bezel is further provided with a shoulder portion 55 against which the 35 ripheral portion of the dial 57 abuts.` 'Illia flat spring V59 between the dial and the front plate 3 is compressed when the bezel is placed overthe ring 37 and acts to hold the dial in i frictional engagement with the shoulder 55 of the bezel .so that when the bezel is rotated the dial must rotate with it, rotation of the bezel being permitted dueftojthe ring 37 being rotatably secured to the casing. Y

It will be noticed that in the` device illustrated, the ring 37 throughout its periphery has an unbroken bearing on Ythe front plate against which bearing itis held by the spring ingmounting for the rotatable bezel. It will also be noted that the connection between the bezel and the ring 37 aorded by theremovable split ring 51 permits the bezel easily to be detached from the instrument for cleaning of the associated parts without the Vnecessity of removing the back plate as hereto-fore has been necessary. g 'I It will beunderstood that' wide deviations maybe made for the submitted embodiment ofthe invention without departing from-the spirit of the invention. i f Y I claim:

I. 1. An instrument of the character l"de-1 scribed having in combination, a casing,a

ring member, a bezel, adial vrotatable with Y said bezel, ,the llatter having. anannularre cess for receiving'- the outer portion: of said ring member, means for securing said outer portion of saidfring memberftosaid bezel, and apart secured to said casing having a",

portion thereof overlying the inner'portion of said ring member for rotatably securing the later to said casing. 1 i

` `2. 'An'. instrument'- of 'the character de- .f scribed having inf combination, a casing, a, ringmember, va bezela dial rotatable with said bezel,rthe latterhaving an annular re,-

cess lfor receivingthe y outer portion ofsaid ring member, means comprising. a split. re-

silient ring insaid recess forjsecuring said 'outer portion of said ringmember .to said lsaid ring member, lmeans for securingsaid outer portion of said ring lmember to lsaid bezel, a'part having a portion thereof overlying the inner portion of .said ring member in rotatable contact therewith substantially throughout its circumference, said part ybeing secured tosaid casing', said bezel surrounding a dial and having abutment means engaging the peripheral portion of said dial, and spring means .between said casing and dial for holdf ing the latter in frictional contact with said abutment means for causing said dial to rotate with said bezel. y i

- 4. An instrument of `.the character described having, in combination, a-casing, a ring member, a bezel, the latter having an annular recess receiving the out-er portion of said ring member, means comprising a split resilient ring in said recess for securing said outer portion of said ring `member to' said. bezel, a part having a portion thereo'fp'verly-` ing the inner portion of said ring member inrotatable contact therewith substantially throughout its circumference, saidr part being secured to said casing, said bezel having an internal annular shoulder facing toward said casing, a dial having the peripheral portion thereof in Contact with said shoulder, and spring means between said part and `said dial for forcingV the latter into frictional contact with said shoulder whereby to cause said dial to Vrotate with said bezel and to hold said ring member in contact with said overlying Y portion of said part.: .v Y c A,

5. An n instrument of .thev character de-Vr scribed having, in combination, a casing, a

4ring memberrotatably.mounted on said casing, a bezel secured to said ring member, a

dial t-h'eo'uter faceV of'which at the peripheral portion. thereof contacts with cooperating radially extending V surface portions of said bezel, andspring meansfor urging saidl dial toward said surfaceV portions ofsaid bezel for holding said dial in contact therewith and for urging 'saidbezelpwith said ring` away from said casing. 7'

6. An instrument ofthe character described having, in combination, a casing, a ring member, abez-el securedtosaid lring member, a dial the outer face of which at the peripheralfportion thereof contacts with 4cooperating radially extending'surface portions of said bezel, a part secured to said casing having a radially extending surface throughout its'circumference cooperating with alikel v surface on said ringV member, and spring means enga-ging said dial for urging the latter with said bezel and ring member away I from said casing whereby said dial is frictionallyv secured to said bezel and said ring member is held frictionally against said part.

7 `An instrumentgof the character described having, in combinatioma casing, in-l dicator mechanismV comprising a reciprocating rack and a rack gear meshing therewith, said casing having an openingl anda perforated screw-threaded nipple projecting eX- teriorly from said casing and 'aligned withsaid opening, said rackhaving a'rodextendin g'through said opening and nipple in spaced relation vto the' walls thereof, and an elongated guide bearing sleeve for said rod in screw-threaded engagement with said nipple;

SQAn instrument lof the character described having, in combination, a casing, a nipple, said nipple carried' by said casing at the exterior thereof, said vnipple being eX- teriorly screw threaded andh'aving a longitudinal perforation opening to the interior of said casing, a contact feeler rodfin said casing projecting through said perforation of said nipple in spaced relation to the walls thereof, and an'elongated guide bearingv sleeve for.

Vsaid rod screw threaded on said nipple; K

i9. An instrumenty of the character described having, inv combination, a casing having an opening, a reciprocating contactfeeler rod projectingv from lsaid casing'through said opening in spaced relation to the walls there` of, an elongated guide Ybearing sleeve for said rod wholly outside of said casing, and means for detachably and rigidly connecting said bearing sleeve to said casing adjacent sald opening. l

10. An instrument of the character described having, in combination, a casing havsaid casing adjacent the last mentioned openll. An instrument of the character described having, in combination, a casing having an opening in the Walls thereof, a reciproeating contact feeler rod in said casing projecting therefrom through said opening in spaced relation to the Walls of said opening, guide bearing means for said rod adjacent the side of said casing opposite said opening, an elongated guide bearing sleeve for said rod at the exterior of said casing, and means for detachably and rigidly Vconnecting said bearing sleeve to said casing about said opening in alignment with said guide bearing means.

12. An instrument of the character described having, in combination, a casing having an opening in the Walls thereof, an axially perforated nipple received by said opening, said nipple having a screw threaded portion, a reciprocating contact feeler rod in said casing extending through the perforation of said nipple in spaced .relation to the Walls of said perforation, a guide bearing sleeve for said rod removably screw-threaded on said nipple, said nipple and casing formed with cooperating surfaces for centering said sleeve coaxially of said rod. Y

13. An instrument of the character described having, in combination, a casing having an opening in the Walls thereof, an axially perforated nipple received by said opening, said nipple having a screw threaded portion, a reciprocating contact feeler rod in said casing extending through the perforation of said nipple in spaced relation to the Walls of said perforation, a guide bearing sleeve for said rod-removably screw-threaded on said nipple, means forming a guide bearing for said rod spaced from said sleeve toward the opposite side of the casing therefrom, said nipple and casing formed With cooperating surfaces for centering said sleeve coaxially with said guide bearing.

14. An instrument of the character described having, in combination, a casing having aligned openings in thev opposite Walls thereof, a reciprocating contact feeler rod projecting into said openings, a guide bearing sleeve for said rod in one of said openings, an axially perforated nipple, said nipple permanently received in the other of said openings and having a screw-threaded portionV at the exterior of said casing, a guide bearing sleeve for said rod removably screwthreadedon said nipple, said nipple and casing formed with cooperating surfaces for centering the bore of the last mentioned sleeve coaxially With the bore of the first mentioned Sleeve.

In testimony whereof, I have signed my name to this specification.

' WARREN AMES. 

